Search results
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Estimation of tag-loss rates for tagged fish in the Patagonian toothfish (Dissostichus eleginoides) fisheries at Heard Island and McDonald Islands in Division 58.5.2
% of all double-tagged fish retain at least one tag after one year, and 80.2% after ten years ... at liberty of 6 years, as l = 0.014 for longline and l = 0.007 for trawl. However, this single tag-loss rate ... fish retain at least one tag after one year, and 80.2% after ten years. The parameter of annual tag ... -loss rate in CASAL’s single-tag model was approximated, for a maximum time at liberty of 6 years ...
Meeting Document : WG-FSA-17/21 : Author(s): P. Ziegler
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Antarctic sea ice losses drive gains in benthic carbon drawdown
Peninsula in the last few years has exposed new open water, allowing large blooms of phytoplankton ... as the phytoplankton die and sink to the sea-bed where the carbon is sequestered for thousands of years. This carbon ... drawdown per year on the West Antarctic continental shelf. Carbon accumulation differs significantly ... in the last few years has exposed new open water, allowing large blooms of phytoplankton to flourish ...
Meeting Document : SC-CAMLR-XXXIV/BG/34 : Author(s): Delegation of the United Kingdom
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Anthropogenic feather soiling, marine debris and fishing gear associated with seabirds at Bird Island, South Georgia, 1998/99
. In this, the sixth year of standardised recording, an unprecedented quantity of line originating from fishing vessels ... of previous years for all other species, except giant petrels, which increased by 75% from the previous ... maximum. Plastic debris remained within the levels of previous years for all species except grey-headed ... year of standardised recording, an unprecedented quantity of line originating from fishing vessels ...
Meeting Document : SC-CAMLR-XVIII/BG/07 : Author(s): Delegation of the United Kingdom
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Fishing equipment, marine debris and hydrocarbon soiling associated with seabirds at Bird Island, South Georgia, 2004/05
such annual report. As in previous years, more items of fishing gear (mostly longlining gear) were found ... of marine debris, though again total quantity is significantly down on previous years. Numbers of debris ... report. As in previous years, more items of fishing gear (mostly longlining gear) were found ... of marine debris, though again total quantity is significantly down on previous years. Numbers of debris ...
Meeting Document : SC-CAMLR-XXIV/BG/14 : Author(s): Delegation of the United Kingdom
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Proposal on establishment of a new fishery for craboids (Anomura, Decapoda) in the Subareas 88.2 and 88.3
B, C, D) in the 2019/20 season. The initiating a new craboid fishery in Subareas 88.2 and 88.3 would be consistent ... B, C, D) in the 2019/20 season. The initiating a new craboid fishery in Subareas 88.2 and 88.3 would be consistent ...
Meeting Document : WG-SAM-2019/21 : Author(s): Delegation of the Russian Federation
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Bird Island, South Georgia, during the 1996 winter and 1996/97 pup-rearing season
entangling materials, with the abundance of string and fishing net reversed from most previous years ... animals involved were juvenile females; the overall severity of injury was the lowest yet recorded ... . The proportion of entanglements in synthetic string (41 %) was much greater than in recent years, with fishing ... net (22%) commensurately reduced and packaging bands (33%) similar to last year. The relatively low ...
Meeting Document : SC-CAMLR-XVI/BG/06 : Author(s): Delegation of the United Kingdom
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Updated description of Patagonian toothfish (Dissostichus eleginoides) tagging and ageing programs in Division 58.5.2, 1997–2015
. These samples have detected fish as old as 51 years, increasing the previous maximum age estimate of 42 years ... . These samples have detected fish as old as 51 years, increasing the previous maximum age estimate of 42 years ...
Meeting Document : WG-FSA-15/55 : Author(s): D.C. Welsford, B. Farmer, T.D. Lamb, C. Péron, E. Woodcock and P.E. Ziegler (Australia)
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A RE-ANALYSIS AND UPDATE OF THE ANTARCTIC KRILL BIOMASS IN THE SOUTH SHETLAND ISLANDS, THROUGH 2011
-based estimates of krill density and recruitment are recalculated for the years 1996 through 2011 ... that 2011 was a year of good recruitment, following two years of low recruitment. Krill biomass ... estimates of krill density and recruitment are recalculated for the years 1996 through 2011. Recent changes ... that 2011 was a year of good recruitment, following two years of low recruitment. Krill biomass ...
Meeting Document : WG-EMM-11/26 : Author(s): A. Cossio, C. Reiss and R. Driscoll (USA)
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Population status of Ross Sea killer whales (Orcinus orca, Type C) in McMurdo Sound, Antarctica, based on photo-identification studies
-eating ecotype, in McMurdo Sound, Antarctica, during 7 seasons, over a 14-year period from 2001/02 ... to 175 there annually. Despite high turnover of different whales between years, we used a Bayesian mark ... , with individuals resighted over 2-14 years. Contrary to recent reports that commercial overfishing of Antarctic ... , in McMurdo Sound, Antarctica, during 7 seasons, over a 14-year period from 2001/02 to 2014/15. Using photo ...
Meeting Document : WG-EMM-16/50 : Author(s): R. Pitman, H. Fearnbach and J.W. Durban
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Analysis of dietary overlap in Antarctic fish (Notothenioidei) from the South Shetland Islands: no evidence of food competition
of main and secondary prey among fish predators was 33% in summer and 37% over the year at Potter Cove; 25 ... % in summer and 7% in winter at Admiralty Bay; and 20% in autumn/winter around Elephant Island. Likewise ... and secondary prey among fish predators was 33% in summer and 37% over the year at Potter Cove; 25% in summer ... and 7% in winter at Admiralty Bay; and 20% in autumn/winter around Elephant Island. Likewise, using the “S” index ...
Meeting Document : WG-FSA-03/13 : Author(s): E. Barrera-Oro (Argentina)